cứu hơi dàiiiiiiiiiiiiiiiiiiiiiiiii

`a) 58 . 75 + 58.50 - 58.25`

`= 58.(75 + 50-25)`

`= 58. 100`

`= 5800`

`b) 125.36 + 125 . 42 + 125.22`

`= 125. (36 + 42+22)`

`= 125 . 100`

`= 12500`

`c) 24.18 + 33 .50 - 75.30`

`= 432 + 1650 - 2250`

`= 432 - (2250 - 1650)`

`= 432 - 600`

`= -(600-432)`

`= -168`

`d) 68xx216 - 68xx16 - 68xx100`

`= 68xx(216 - 16-100)`

`= 68xx100`

`= 6800`

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